Found on my ex-girlfriend’s-next-older-full-blood-sister’s jacket that she left lying around the house. It was only a matter of time before it was “found” and appropriated. I’ve been told it’s a character/quote from an animated online Flash cartoon. (Title/URL unknown, sadly).
EDIT:10-25-10
Thanks to Dru Mitchell: source is http://www.sickanimation.com/cartoons/the-red-diamond-dragon-club
Thank you, again.

Haha!!! That’s from a Sick Animation Cartoon! I love Sick Animation!
Check out theirr site at: http://www.sickanimation.com/
That mouth is from this cartoon: http://www.sickanimation.com/cartoons/the-red-diamond-dragon-club/
And mi favorite Sick Animation is: http://www.sickanimation.com/cartoons/too-young-to-die/
))